Perfect, as new,  a Size 10 (Petite) vintage sleeveless evening gown made from  black polyester with sequin and lace design on the upper bodice, and a slit skirt  from the knee. Column shape with back length 45 inches. (I'm 5' 4 '' and it was a perfect length for me).  Fully lined, only worn twice for wedding evening events, in the late 1990s. Side zip.  Bought from Richard Shops. 
Stored in a dry smoke-free environment. Would be suitable for a Prom, or any smart evening occasion.